Windows/Mac/Linux: Mozilla just pushed out the first release candidate for the upcoming Firefox 3.6. Early adopters, start your downloads.

Firefox 3.6 has been a much-delayed release, but the release candidate means that the final release is just around the corner. The Firefox 3.6 release comes packed with Personas built-in (the no-restart theming functionality), better tools to keep plug-ins up to date, improved performance, and improvements for HTML5. (Speaking of, here's how HTML5 will change the way you use the web.)

Firefox and Safari partially support it, Google's Wave and Chrome projects are banking on it,…
Read more Read more

Update: If you're using the common about:config hack to make your extensions compatible with the latest release, it's going to break with the new version; here's how to make your extensions work with Firefox 3.6.